To convert the equation \( a^{(2b + 1)} = 3c - d \) into logarithmic form, we follow the definition of logarithms: if \( a^x = y \), then \( \log_a(y) = x \).
In this case:
- \( a \) is the base,
- \( (2b + 1) \) is the exponent,
- \( (3c - d) \) is the result.
Thus, we can write:
\[ \log_a(3c - d) = 2b + 1 \]
Therefore, the correct logarithmic form of the given equation is:
log subscript a baseline left parenthesis 3 c minus d right parenthesis equals 2 b plus 1